I used to ride almost only sand dunes so I am coming off a 450. Moving to a 250 now that I am riding single track more and just looking for a more agile bike. Yes the 2015 is powerful for a 250, but what if I want MORE out of it while still keeping the handling characteristics. Please give me some suggestions for power modifications, best bang for the buck! The bike will be in everything ranging from tight single track to open desert to MX track. Riding elevation ranges from 5000 to 8000 ft if that affects any decision when it comes to engine modifications. Here's a picture before the bike break in just to excite some people.